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Fig. 2 | Genome Biology

Fig. 2

From: Developmental transitions: integrating environmental cues with hormonal signaling in the chromatin landscape in plants

Fig. 2

Involvement of chromatin regulators during seed maturation, dormancy, and germination. Master transcription factors (TFs), such as ABI3, LEC2, FUS3, LEC1, and DOG1, promote seed maturation and dormancy and trigger ABA hormone accumulation. The H2B ubiquitinase HUB, the PAF1 complex, and H3K4 methyltransferases (ATXs) promote DOG1 transcription. Subsequently, during germination, a large number of different chromatin regulators jointly repress expression of the LEC2, ABI3, FUS3, LEC1, and DOG1 TF and increase the GA/ABA hormone ratio. These chromatin regulators include MEDIATOR (MED) components, H3K9 methyltransferases (HMTs), H3K4 demethylases (HDMTs), HDACs, and the PRC1 and PRC2 Polycomb complexes. Finally, light signaling promotes photomorphogenesis, activates the seedling program, and triggers large scale nuclear reorganization, which is mediated by the PIF TFs and chromatin regulators such as BRM and HDACs

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Genome Biology

ISSN: 1474-760X

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